TWO STAGE OXYGENATE CONVERSION REACTOR WITH IMPROVED SELECTIVITY

• Main Authors: JOHNSON, RICHARD A., II, SECHRIST, PAUL A, STEVENS, CARL J
• Format: Patent
• Language: English; French
• Published: 08.03.2012
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; ORGANIC CHEMISTRY; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR RELEVANT APPARATUS; TRANSPORTING

A process and apparatus is presented for the improved selectivity of oxygenate conversion to olefins. The process includes passing a process stream through a two stage reactor, wherein the process stream is separated from the catalyst in the first stage before passing the process stream to the second stage. The catalyst is continuously passed through the two stages, and cycles through a regeneration unit to control the carbon content on the catalyst. L'invention concerne un procédé et un appareil assurant une sélectivité améliorée de conversion de composés oxygénés en oléfines. Le procédé consiste à faire passer un flux de traitement à travers un réacteur à deux étages. Le flux de traitement est séparé du catalyseur dans le premier étage avant de passer au second étage. Le catalyseur passe en continu à travers les deux étages, et accomplit des cycles à travers une unité de régénération pour réguler la teneur en carbone sur le catalyseur.